JP3779468B2 - Water resistant power window device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a water-resistant power window device, and in particular, when an automobile falls into the water due to any cause, the water-resistant power that can open the door window reliably by operating the window lowering switch. It relates to window equipment.
[0002]
[Prior art]
Generally, power window devices used in automobiles are submerged in the window up switch and window down switch when the automobile falls into the water, and it is difficult to maintain an electrical insulation state between the contact points of these switches. Even though the contacts of the window raising switch and window lowering switch are open, these contacts are electrically connected through a relatively small resistance value. Thereafter, the window lowering switch is operated. However, the window lowering operation, that is, the window opening operation cannot be performed.
[0003]
FIG. 5 is a circuit diagram showing an example of a circuit configuration of a main part of such a known power window device.
[0004]
As shown in FIG. 5, the power window device includes a window raising switch 51, a window raising relay 52 and its contact 52C, a window lowering switch 53, a window lowering relay 54 and its contact 54C, and an automatic window raising switch 55. And an automatic window lowering switch 56, a window opening / closing motor 57, a control integrated circuit (hereinafter referred to as a control IC) 58, and an in-vehicle power source 59.
[0005]
A window raising switch 51 and a window raising relay 52 are connected in series, and a window lowering switch 53 and a window lowering relay 54 are connected in series between the in-vehicle power source 59 and the grounding point. A connection point A between the window raising switch 51 and the window raising relay 52 is connected to terminals (1) and (4) of the control IC 58, and a connection point B between the window lowering switch 53 and the window lowering relay 54 is a terminal (2) of the control IC 58. , (5). The automatic window raising switch 55 has one end connected to the connection point A and the other end connected to the terminal (3) of the control IC 58. The automatic window lowering switch 56 has one end connected to the connection point B and the other end connected to the terminal of the control IC 58. Connected to (3). As for the contact 52C of the window raising relay 52, the movable contact is connected to one end of the window opening / closing motor 57, one fixed contact is connected to the vehicle-mounted power supply 59, and the other fixed contact is connected to the grounding point. As for the contact 54C of the window lowering relay 54, the movable contact is connected to the other end of the window opening / closing motor 57, one fixed contact is connected to the in-vehicle power source 59, and the other fixed contact is connected to the grounding point. The terminal (6) of the control IC 58 is connected to the in-vehicle power supply 59.
[0006]
The power window device having the above-described configuration generally operates as follows.
[0007]
When a driver or the like operates the window raising switch 51, the contact is closed, and the window raising relay 52 is driven by the in-vehicle power supply 59. At this time, the contact 52C of the window raising relay 52 is switched, and the window opening / closing motor 57 rotates in one direction, whereby the window moves in the raising direction (window closing direction). When the operation of the window raising switch 51 is stopped, the contact is opened, the driving of the window raising relay 52 is stopped, the rotation of the window opening / closing motor 57 is also stopped, and the window is also stopped from rising. On the other hand, when the window lowering switch 53 is operated, the contact is closed and the window lowering relay 54 is driven by the in-vehicle power source 59. At this time, the contact 54C of the window lowering relay 54 is switched, and the window opening / closing motor 57 rotates in the other direction, whereby the window moves in the lowering direction (window opening direction). When the operation of the window lowering switch 53 is stopped, the contact is opened, the drive of the window lowering relay 54 is stopped, the rotation of the window opening / closing motor 57 is stopped, and the window lowering is also stopped.
[0008]
When a driver or the like operates the automatic window raising switch 55, the contact is closed and the window raising switch 51 is simultaneously operated to close the contact. By closing the contact of the window raising switch 51, the window raising relay 52 is driven by the in-vehicle power source 59, and the window opening / closing motor 57 is rotated in one direction in the same manner as when the window raising switch 51 is operated. As a result, the window moves in the upward direction (wind closing direction). Further, by closing both the contact of the window raising switch 51 and the contact of the automatic window raising switch 55, the voltage at the connection point A is supplied to the terminals (1) and (3) of the control IC 58, respectively, and responds to the supply of the voltage. Then, the voltage of the in-vehicle power supply 59 is latched and outputted to the terminal (4) of the control IC 58, and this voltage is supplied to the window raising relay 52. Therefore, even if the operation of the automatic window raising switch 55 is stopped and its contact is opened, and at the same time, the operation of the window raising switch 51 is stopped and the contact is opened, the output voltage of the terminal (4) is latched. Thus, the window raising relay 52 continues to be driven, and the window opening / closing motor 57 continues to rotate in one direction, so that the window continues to move in the ascending direction. The movement of the window in the upward direction is continued until the window is fully closed.
[0009]
  Similarly, when the automatic window lowering switch 56 is operated, the contact is closed and the window lowering switch 53 is simultaneously operated to close the contact. Also in this case, the window opening / closing motor 57 rotates in the other direction as in the case where the window lowering switch 53 is operated, thereby moving the window in the lowering direction (window opening direction). Further, the contact of the window lowering switch 53 and the automatic window lowering switch 56When the contacts of both are closed, the terminals of the control IC 58[2] (Indicated by circled numbers in the figure, but shown here in parentheses.)as well as[3] (Indicated by circled numbers in the figure, but here in parenthesized numbers.)The voltage at the connection point B is supplied to each of the terminals of the control IC 58 in response to the supply of the voltage.[5] (Indicated by circled numbers in the figure, but in parentheses here.)The voltage of the in-vehicle power supply 59 is latched and output, and this voltage is supplied to the window lowering relay 54. For this reason, even if the operation of the automatic window lowering switch 56 is stopped and its contact is opened, and at the same time, the operation of the window lowering switch 53 is stopped and the contact is opened, the terminal[5] (Indicated by circled numbers in the figure, but in parentheses here.)Since the output voltage is latched, the window lowering relay 54 continues to be driven, and the window opening / closing motor 57 continues to rotate in the other direction, so that the window continues to move in the lowering direction. The movement of the window in the downward direction is continued until the window is fully opened.
[0010]
By the way, the known power window device has a relatively resistance value due to water between the contacts of the switches 51 and 53 when the automobile falls into the water for some reason and is immersed in the window raising switch 51 and the window lowering switch 53. The leakage resistances 51R and 53R are connected to each other, and the leakage resistances of the window raising relay 52 and the window lowering relay 54 are connected to each other even though the contacts of the window raising switch 51 and the window lowering switch 53 are open. The output voltage of the in-vehicle power supply 59 is applied through 51R and 53R, and the window raising relay 52 and the window lowering relay 54 are driven simultaneously, or the window raising relay 52 and the window lowering relay 54 are simultaneously driven halfway. , The contact points 52C and 54C are switched at the same time. Or their contact points 52C, a state in which 54C is not switched to any of the fixed contacts. As a result, the motor 57 is not driven to rotate. At this time, even if the driver or the like of the automobile opens the window, even if the window lowering switch 53 is operated, the window opening / closing motor 57 is not rotated and the window is not opened. As described above, the known power window device has a problem that when the automobile falls into the water and becomes inundated, normal window operation can no longer be performed.
[0011]
In order to solve such a problem, the present applicant has a first series circuit composed of a first switch having one circuit and two contacts, one end of which is selectively connected to an in-vehicle power source or a ground point, and a first relay, A second series circuit consisting of a second switch and a second relay, one end of which is selectively connected to an in-vehicle power source or a ground point, and a control integrated circuit are provided, and the other end of the first series circuit is a second switch and a second relay. The other end of the second series circuit is connected to the connection point of the first switch and the first relay, and the first relay is energized by switching the contact of the first switch to rotate the motor in one direction. We have already proposed a water-resistant power window device that drives and raises the window, and energizes the second relay by switching the contact point of the second switch to rotate the motor in the other direction and lower the window. Applicant 9-33 And it filed as No. 728.
[0012]
Here, FIG. 6 is a circuit configuration diagram showing the configuration of the proposed water-resistant power window device.
[0013]
As shown in FIG. 6, the water-resistant power window device includes a one-circuit two-contact window raising switch 61, a window raising relay 62 and its contact 62 </ b> C, a one-circuit two-contact window lowering switch 63, and a window lowering relay. 64 and its contact 64C, an automatic window raising switch 65, an automatic window lowering switch 66, a first backflow prevention diode 67, a second backflow prevention diode 68, a third backflow prevention diode 69, and a fourth backflow prevention diode. 70, a window opening / closing motor 71, a control integrated circuit (hereinafter referred to as a control IC) 72, and an in-vehicle power source 73.
[0014]
  The movable contact of the window raising switch 61, the third backflow prevention diode 69, the first backflow prevention diode 67, and the window rise relay 62 are connected in series to constitute a first series circuit. The movable contact of the window lowering switch 63, the fourth backflow prevention diode 70, the second backflow prevention diode 68, and the window lowering relay 64 are connected in series to constitute a second series circuit. The window raising switch 61 has a normally closed contact connected to the ground and a normally open contact connected to the in-vehicle power source 73. The other end of the window raising relay 62 is connected to the connection point B 1 of the movable contact of the window lowering switch 63 and the fourth backflow prevention diode 70. Wind down switch 63 is alwaysCloseThe contact is grounded and the normally open contact is connected to the in-vehicle power source 73. The window lowering relay 64 has a window at the other end.RiseThe switch 61 is connected to the connection point A 1 of the movable contact of the switch 61 and the third backflow prevention diode 69. A connection point A2 between the third backflow prevention diode 69 and the first backflow prevention diode 67 is a terminal of the control IC 72.[1] (Indicated in the figure by a circled number, here it is indicated by a number with parentheses.)And terminals[4] (Indicated by circled numbers in the figure, but here in parentheses.)The connection point B2 between the fourth backflow prevention diode 70 and the second backflow prevention diode 68 is a terminal of the control IC 72.[2] (Indicated by circled numbers in the figure, but shown here in parentheses.)And terminals[5] (Indicated by circled numbers in the figure, but in parentheses here.)Connected to.
[0015]
The water-resistant power window device having the above-described configuration generally operates as follows.
[0016]
When a driver or the like operates the window raising switch 61, the movable contact is switched from the normally closed contact side to the normally opened contact side, and the voltage of the in-vehicle power supply 73 is changed to the window raising switch 61 and the third backflow prevention diode 69 that are switched. The first backflow prevention diode 67, the window raising relay 62, and the window lowering switch 63 whose movable contact is switched to the normally closed contact side shown in the figure reach the ground point, and the window raising relay 62 is driven. At this time, the movable contact of the contact 62C of the window raising relay 62 is switched from the illustrated connection state to the reverse connection state, the voltage of the in-vehicle power supply 73 is supplied to the window opening / closing motor 71, and the window opening / closing motor 71 rotates in one direction. Then raise the window and close the window. When the operation of the window raising switch 61 is stopped, the movable contact is switched to the normally closed contact side shown in the figure, the voltage of the in-vehicle power supply 73 is blocked by the window raising switch 61, and the driving of the window raising relay 62 is stopped. Then, the rotation of the window opening / closing motor 71 is stopped, the rising of the window is stopped, and the window is held in that position.
[0017]
On the other hand, when a driver or the like operates the window lowering switch 63, the movable contact is switched from the normally closed contact side to the normally open contact side, and the voltage of the on-vehicle power supply 73 is changed to the window lowering switch 63, the fourth backflow prevention. The grounding point is reached via the diode 70, the second backflow prevention diode 68, the window lowering relay 64, and the window raising switch 61 whose movable contact is switched to the normally closed contact side shown in the figure, and the window lowering relay 64 is driven. At this time, the movable contact of the contact 64C of the window lowering relay 64 is switched from the connection state shown in the drawing to the reverse connection state, the voltage of the vehicle-mounted power supply 73 is supplied to the window opening / closing motor 71, and the window opening / closing motor 71 rotates in the other direction. Then the window descends and opens the window. When the operation of the window lowering switch 63 is stopped, the movable contact is switched to the normally closed contact side shown in the figure, the voltage of the in-vehicle power supply 73 is blocked by the window lowering switch 63, and the driving of the window lowering relay 64 is stopped. Then, the rotation of the window opening / closing motor 71 is stopped, the lowering of the window is stopped, and the window is held at that position.
[0018]
When a driver or the like operates the automatic window raising switch 65, the window raising switch 61 is simultaneously operated in conjunction with the operation, the movable contact of the automatic window raising switch 65 is closed, and the movable contact of the window raising switch 61 is always shown in the figure. Switches from the closed contact side to the normally open contact side. By switching the movable contact of the window raising switch 61, the voltage of the on-vehicle power supply 73 is applied to the window raising relay 62 via the window raising switch 61, the third backflow prevention diode 69, and the first backflow prevention diode 67. As in the case where 61 is operated alone, the window raising relay 62 is driven, and the window opening / closing motor 71 rotates in one direction to raise the window and close the window. At this time, when the movable contact of the automatic window raising switch 65 is closed, the voltage of the in-vehicle power source 73 is applied to the terminal (3) of the control IC 72, and the control IC 72 receives the voltage of the in-vehicle power source 63 supplied to the terminal (6). Is output to the terminal (1) and supplied to the window raising relay 62. Here, when the operation of the automatic window lift switch 65 is stopped and the operation of the interlocked window lift switch 61 is also stopped, the movable contact of the window lift switch 61 is switched from the normally open contact side to the normally closed contact side, and the window lift switch 61 Although the supply of the voltage of the in-vehicle power supply 73 to the window raising relay 62 via 61 is stopped, the supply of the voltage of the in-vehicle power supply 73 output from the terminal (1) of the control IC 72 is latched and applied to the window raising relay 62. Since the supply of the voltage of the in-vehicle power supply 73 is continued, the window raising relay 62 is continuously driven. For this reason, the window opening / closing motor 61 continues to rotate in one direction and continues to raise the window. The rising of the window continues until the window reaches the top of the range of movement and is fully closed.
[0019]
Similarly, when a driver or the like operates the automatic window lowering switch 66, the window lowering switch 63 is simultaneously operated in conjunction with the operation, the movable contact of the automatic window lowering switch 66 is closed, and the movable contact of the window lowering switch 63 is illustrated. Switches from the normally closed contact side to the normally open contact side. When the movable contact of the window lowering switch 63 is switched to the normally open contact side, the voltage of the in-vehicle power supply 73 is applied to the window lowering relay 64 via the window lowering switch 63, the fourth backflow prevention diode 70, and the second backflow prevention diode 68. As in the case of operating the window lowering switch 63 alone, the window lowering relay 64 is driven, the window opening / closing motor 71 rotates in the other direction, lowers the window, and opens the window. At this time, since the movable contact of the automatic window lowering switch 66 is closed, the voltage of the in-vehicle power source 73 is applied to the terminal (3) of the control IC 72, and the control IC 72 is connected to the terminal (6) of the in-vehicle power source 73. The voltage is output to the terminal (2) and supplied to the window lowering relay 64. Here, when the operation of the automatic window lowering switch 64 is stopped and the operation of the interlocked window lowering switch 63 is also stopped, the movable contact of the window lowering switch 63 is switched from the normally open contact side to the normally closed contact side. Although the supply of the voltage of the in-vehicle power source 73 to the window lowering relay 64 via 63 is stopped, the supply of the voltage of the in-vehicle power source 73 output from the terminal (2) of the control IC 72 is latched and supplied to the window lowering relay 64. Supply of the voltage of the vehicle-mounted power supply 73 is continued, and the window lowering relay 64 is continuously driven. For this reason, the window opening / closing motor 71 continues to rotate in the other direction and continues to descend the window. This lowering of the window continues until the window reaches the bottom of the moving range and the window is fully opened.
[0020]
In addition, if the vehicle falls into the water for some reason when the window is completely closed or nearly fully closed, this water resistant power window device installed inside the door will also be submerged. It becomes a state. In this water-resistant power window device, most of the components are waterproofed, but the window raising switch 41, the window lowering switch 63, the automatic window raising switch 65, and the automatic window lowering switch 66 are all completely waterproofed. Since it cannot be performed, water slightly enters during the inundation. When water enters the window raising switch 61 or the window lowering switch 63, as described above, a leakage resistance due to water having a relatively small resistance value is connected between the movable contact and the normally open contact. Although the window raising switch 61 and the window lowering switch 63 are normally connected at their normally closed contacts, the voltage of the in-vehicle power supply 53 applied to the window raising switch 61 and the window lowering switch 63 is a movable contact. Flows to the grounding point through the leakage resistance between the normally open contact and the normally closed contact, and is not applied to the window raising relay 62 and the window lowering relay 64. Therefore, the contact 62C of the window raising relay 62 and the contact 64C of the window lowering relay 64 are in the illustrated connection state, and the window opening / closing motor 71 is not driven to rotate.
[0021]
In such a state, when a driver or the like operates the window lowering switch 63, the contact of the window lowering switch 63 is switched from the normally closed contact side to the normally open contact side, and is connected between the normally open contact and the movable contact. The leakage resistance caused by the water becomes short-circuited by switching the contact, and at the same time, the normally-closed contact side and the movable contact change from the short-circuited state to the open state, and this time between the normally-closed contact side and the movable contact. Leakage resistance due to water comes to be connected. For this reason, the voltage of the vehicle-mounted power supply 73 is supplied to the window lowering relay 64 via the window lowering switch 63, the fourth backflow prevention diode 70, and the second backflow prevention diode 68 in a short circuit state, and the window lowering relay 64 is driven. . Then, by driving the window lowering relay 44, the contact 44C is switched from the illustrated connection state to the reverse connection state, the voltage of the in-vehicle power source 73 is applied to the window opening / closing motor 71, and the window opening / closing motor 71 is rotationally driven in the other direction. Is done. As a result, the window is lowered and the window is opened, so that drivers and the like can escape from the opened window.
[0022]
[Problems to be solved by the invention]
  The water-resistant power window device according to the above proposal can open the window by operating the window lowering switch 63 even when the automobile falls into water and the water-resistant power window device is completely submerged. AlthoughAs described above, the window lowering switch 63 is operated to switch the contact thereof to the normally open contact side, the normally open contact and the movable contact are short-circuited, and the voltage of the in-vehicle power supply 73 is supplied to the window lowering relay 64. At the same time, the normally closed contact side and the movable contact are open, but a leakage resistance due to water with a relatively small resistance value is connected. The current is diverted, and the drive current flowing through the window lowering relay 64 is reduced by that amount, so that the contact point 64C of the window lowering relay 64 is not switched. As a result, the window opening / closing motor 71 is not rotated and the window is opened. There is a risk that it will be in a state where it cannot be removed.
[0023]
  Thus, the water-resistant power window device according to the above proposal cannot reliably open the window even if the window lowering switch is operated when the automobile falls into water and the water-resistant power window device is in a flooded state. There is a problem that it is difficult to ensure the reliability of the operation of the water-resistant power window device.
[0024]
  The present invention solves each of these problems, and one object of the present invention is to quickly detect water ingress into the water-resistant power window device and immediately detect the inundation by the detection.Response toIt is an object to provide a water-resistant power window device capable of satisfying the requirements.
[0025]
Another object of the present invention is to provide a water-resistant power window device that does not weaken the water immersion detection function of the water immersion detection element even when the voltage of the in-vehicle power supply is high.
[0026]
[Means for Solving the Problems]
  In order to achieve the one and other objects, the water-resistant power window device according to the present invention is configured so that the driving end of the first relay in the first series circuit is connected to the first terminal of the control integrated circuit, and the second series circuit is used. The driving end of the second relay is connected to the second terminal of the control integrated circuit, and the semiconductor detection element is connected between the in-vehicle power supply and the detection terminal of the control integrated circuit, and between the control terminal of the semiconductor detection element and the ground.seriesA submergence detection element connected via a resistor is provided, and when the water-resistant power window device is submerged, immediately after the start of submergence, the submergence detection element immediately turns on the semiconductor detection element, and the first terminal of the control integrated circuit And means for outputting a power supply voltage from the second terminal.
[0027]
  According to the above means, when the automobile falls into the water and the water-resistant power window device is inundated, the water-resistant power window device is immediately submerged, and immediately after the submersion detection element is detected, the semiconductor is immediately detected. The device is turned on, the power supply voltage is output from the first terminal and the second terminal of the control integrated circuit, and the power supply voltage is respectively applied to the first relay that raises (closes) the window and the second relay that lowers (opens) the window. Because I tried to supplyImmerseIs it early after water?RauThe first switch for raising India or the second switch for lowering the window can be operated to raise or lower the window. In particular, the second switch can be used to lower the window and quickly open the window. It becomes possible to escape to.
[0028]
  Further, according to the above means, the submergence detecting element is directly connected.LineBy connecting the resistance, when the submergence detection element detects submersion, the peak value of the current flowing through the submergence detection element is suppressed by this series resistance. In addition, the inundation detection function of the submergence detection element is not weakened.
[0029]
DETAILED DESCRIPTION OF THE INVENTION
  In the embodiment of the present invention, the water-resistant power window device has a first series circuit composed of a first switch and a first relay, one end of which is switched and connected to an in-vehicle power source or a ground point, and one end to the in-vehicle power source or the ground point. A second series circuit comprising a second switch and a second relay to be switched and a control integrated circuit;The first switch, the first relay, the second switch, the second relay, and the control integrated circuitThe other end of the first relay to which the first switch is not connected is connected to a connection point between the second switch and the second relay, and the first switch of the first relay is One end connected is connected to the first terminal of the control integrated circuit, and the other end not connected to the second switch of the second relay is connected to a connection point of the first switch and the first relay. One end of the second relay to which the second switch is connected is connected to the second terminal of the control integrated circuit, and when the contact of the first switch is switched, the motor is turned on by energizing the first relay. The motor is rotated in the direction to raise the window, and when the contact of the second switch is switched, the motor is rotated in the other direction by the energization of the second relay to lower the window. A semiconductor detecting element is connected between the detection terminals of the control integrated circuit and, between the ground and the control terminal of the semiconductor detection elementConnect via series resistorThe semiconductor detection element is turned on at the time of submergence detection by the submergence detection element, and the power supply voltage is output from the first terminal and the second terminal of the control integrated circuit.
[0030]
In one embodiment of the present invention, the water-resistant power window device has two or more submergence detection elements arranged and connected in parallel.
[0031]
According to these embodiments of the present invention, the semiconductor detection element connected between the detection terminals of the control integrated circuit of the in-vehicle power supply, and the control terminal of the semiconductor detection element and the ground are connected via a series resistor. A submergence detection element is provided, and when the submersion detection element is submerged, the semiconductor detection element is turned on when the submersion detection element is submerged, and the power supply voltage is output from the first terminal and the second terminal of the control integrated circuit. Is supplied to the first relay that raises (closes) and the second relay that lowers (opens) the window, and the submergence is detected when the vehicle falls into water and is immersed in the water-resistant power window device. The element quickly detects inundation into the water-resistant power window device, that is, the detection of submergence, and immediately after the detection, turns on the semiconductor detection element and connects the first terminal of the control integrated circuit. Since the power supply voltage is output from the second terminal and the power supply voltage is supplied to the first relay and the second relay, the first switch that raises the window or the window is lowered at this time or later. By operating the second switch, the window can be raised or lowered, and in particular, by moving the second switch, the window can be lowered quickly from the open window of a submerged car. It becomes possible to escape to.
[0032]
In addition, according to these embodiments of the present invention, since the series resistance is connected to the submergence detection element, the detection current flowing through the submergence detection element at the time of submergence detection in the submergence detection element regardless of the magnitude of the power supply voltage. The submergence detection element does not cause rapid electric corrosion (corrosion) due to submersion, and the submergence detection function of the submergence detection element does not weaken.
[0033]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0034]
FIG. 1 is a circuit diagram showing the main configuration of a first embodiment of a water-resistant power window device according to the present invention.
[0035]
As shown in FIG. 1, the water-resistant power window device of the first embodiment includes a window raising switch (first switch) 1 composed of a switch with one circuit and two contacts, a window raising relay 2 and its contacts 2C, 1 A window lowering switch (second switch) 3 comprising a circuit 2 contact switch, a window lowering relay 4 and its contact 4C, an automatic window raising switch 5, an automatic window lowering switch 6, a first backflow prevention diode 7, The second backflow prevention diode 8, the third backflow prevention diode 9, the fourth backflow prevention diode 10, the window opening / closing motor 11, the control integrated circuit (hereinafter referred to as control IC) 12, and the on-vehicle power supply (battery) 13, a transistor (semiconductor detection element) 14, a pair of parallel submergence detection conductive pins (submergence detection element) 15, resistors 16, 1 When, and a diode 18, and a series resistor 19.
[0036]
  The movable contact of the window raising switch 1, the third backflow prevention diode 9, the first backflow prevention diode 7, and the window rise relay 2 are connected in series to form a first series circuit. The movable contact of the window lowering switch 3, the fourth backflow prevention diode 10, the second backflow prevention diode 8, and the window lowering relay 4 are connected in series to form a second series circuit. In the window raising switch 1, one fixed contact (normally closed contact) is grounded, the other fixed contact (normally open contact) is connected to the in-vehicle power supply 13, and the movable contact is connected to the anode of the third backflow prevention diode 9. Is done. One end of the window raising relay 2 is connected to the cathode of the first backflow prevention diode 7, and the other end is connected to a connection point B <b> 1 between the movable contact of the window lowering switch 3 and the anode of the fourth backflow prevention diode 10. The connection point A2 between the anode of the first backflow prevention diode 7 and the cathode of the third backflow prevention diode 9 is a terminal [1] (In the figure, it is indicated by a circled number, but here it is indicated by a number with parentheses.)And terminal (first terminal)[4] (Indicated by circled numbers in the figure, but here in parentheses.)Connected to. The window lowering switch 3 has one fixed contact (normallyCloseContact) is grounded, and the other fixed contact (normally open contact) is connected to the in-vehicle power supply 13. One end of the window lowering relay 4 is connected to the cathode of the second backflow prevention diode 8, and the other end is connected to a connection point A 1 between the movable contact of the window raising switch 1 and the anode of the third backflow prevention diode 9. A connection point B2 between the anode of the second backflow prevention diode 8 and the cathode of the fourth backflow prevention diode 10 is a terminal of the control IC 12.[2] (Indicated by circled numbers in the figure, but shown here in parentheses.)And terminal (second terminal)[5] (Indicated by circled numbers in the figure, but in parentheses here.)Connected to.
[0037]
The automatic window raising switch 5 has a movable contact connected to the in-vehicle power supply 13 and a fixed contact connected to the terminal (3) of the control IC 12. The automatic window lowering switch 6 has a movable contact connected to the in-vehicle power supply 13 and a fixed contact connected to the terminal (3) of the control IC 12. As for the contact 2C of the window raising relay 2, a movable contact is connected to one end of the window opening / closing motor 11, one fixed contact is connected to the in-vehicle power supply 13, and the other fixed contact is grounded. As for the contact 4C of the window lowering relay 4, a movable contact is connected to the other end of the window opening / closing motor 11, one fixed contact is connected to the in-vehicle power supply 13, and the other fixed contact is grounded. The in-vehicle power supply 13 has a positive electrode side connected to the terminal (6) and the terminal (power supply terminal) (7) of the control IC 12, and a negative electrode side connected to the ground.
[0038]
Further, the transistor 14 has an emitter connected to the terminal (7) of the control IC 12, a collector connected to a terminal (detection terminal) (8) of the control IC 12, and a base connected to the parallel submergence detection conductive pin 15 via the series resistor 19. Connected to ground. The resistor 16 is connected between the base and emitter of the transistor 14, and the resistor 17 and the diode 18 are connected in series between the detection terminal (8) of the control IC 12 and the ground.
[0039]
2 (a) and 2 (b) are configuration diagrams showing an example of the configuration when the water-resistant power window device of the first embodiment is mounted and arranged on a wiring board. FIG. 2 (a) shows the wiring board. A bottom view and (b) are side views of the wiring board.
[0040]
As shown in FIGS. 2 (a) and 2 (b), the water-resistant power window device includes a wiring board 20, a driver side window opening / closing switch, a passenger side window opening / closing switch, a rear right seat side window opening / closing switch, A left seat side window opening / closing switch (no figure number), a window opening / closing lock switch (no figure number), and a connector (also no figure number) are mounted. In addition to this, various components are mounted and arranged on the wiring board 20, and the same components as those illustrated in FIG. 1 are denoted by the same reference numerals.
[0041]
The wiring board 20 has a control IC 12, a driver seat side window opening / closing switch, a passenger seat side window opening / closing switch, a rear right seat side window opening / closing switch, a rear left seat side window opening / closing switch, and the like mounted on the upper surface side. On the side, a window raising relay 2, a window lowering relay 4, a transistor 14, a connector, and the like are mounted and arranged, and a window opening / closing lock switch is installed and arranged from the upper surface side to the lower surface side.
[0042]
In this case, the parallel submergence detection conductive pins 15 are erected on the lower surface side of the wiring board 20 so as to protrude in a substantially perpendicular state to the surface of the wiring board 20. The length of the parallel submergence detection conductive pin 15 is preferably selected so as to be at least longer than the length of the lead of the other component parts so as to be as long as possible in order to expand the detection range of water immersion.
[0043]
Furthermore, FIG. 3 is a characteristic diagram showing an example of a detection current flowing through the parallel submergence detection conductive pin 15 when submergence is detected in the water-resistant power window device of the first embodiment.
[0044]
In FIG. 3, the vertical axis is the detected current, the horizontal axis is the time, the curve i shown by the solid line is the characteristic curve of the first embodiment, and the curve b shown by the dotted line is the characteristic when the series resistance is not connected. It is a curve.
[0045]
The water-resistant power window device according to the first embodiment having the above-described configuration generally operates as follows.
[0046]
First, the operation of the automobile when it is normal (not flooded) will be described.
[0047]
When a driver or the like operates the window raising switch 1, the movable contact is switched from the normally closed contact side to the normally opened contact side, and the voltage of the on-vehicle power supply 13 is changed to the window raising switch 1 and the third backflow prevention diode 9. The first reverse current prevention diode 7, the window raising relay 2, and the window contact switch 2 whose movable contact is switched to the normally closed contact shown in the figure reach the ground point, and the window raising relay 2 is driven. At this time, at the contact 2C of the window raising relay 2, the movable contact is switched from the illustrated connection state to the reverse connection state, the voltage of the in-vehicle power supply 13 is supplied to the window opening / closing motor 11, and the window opening / closing motor 11 is moved in one direction. Rotate. As the window opening / closing motor 11 rotates in one direction, the window rises and closes the window. When the operation of the window raising switch 1 is stopped, the movable contact is switched to the illustrated normally closed contact side, and the voltage of the in-vehicle power supply 13 is blocked from being supplied to the window raising relay 2 by the window raising switch 1, and the window rises. Since the contact 2C of the relay 2 is in the illustrated connection state, the rotation of the window opening / closing motor 11 is stopped, the rising of the window is stopped, and the window is held at that position.
[0048]
On the other hand, when a driver or the like operates the window lowering switch 3, the movable contact is switched from the normally closed contact side to the normally open contact side, and the voltage of the on-vehicle power supply 13 is changed to the window lowering switch 3 and the fourth backflow prevention. The window lowering relay 4 is driven through the diode 10, the second backflow prevention diode 8, the window lowering relay 4, and the window raising switch 1 whose movable contact is switched to the normally closed contact shown in the figure. At this time, at the contact 4C of the window lowering relay 4, the movable contact is switched from the connection state shown in the figure to the reverse connection state, the voltage of the in-vehicle power supply 13 is supplied to the window opening / closing motor 11, and the window opening / closing motor 11 is moved in the other direction. Rotate. By the rotation of the window opening / closing motor 11 in the other direction, the window is lowered and the window is opened. When the operation of the window lowering switch 3 is stopped, the movable contact is switched to the normally closed contact side shown in the figure, and the voltage of the in-vehicle power supply 13 is blocked from being supplied to the window lowering relay 4 by the window lowering switch 3, and the window lowering Since the contact 4C of the relay 4 is in the connection state shown in the figure, the rotation of the window opening / closing motor 11 is stopped, the lowering of the window is stopped, and the window is held at that position.
[0049]
When a driver or the like operates the automatic window raising switch 5, the window raising switch 1 is simultaneously operated in conjunction with the operation, the movable contact of the automatic window raising switch 5 is closed, and the movable contact of the window raising switch 1 is illustrated. Switches from the normally closed contact side to the normally open contact side. When the movable contact of the window raising switch 1 is switched to the normally open contact side, the voltage of the on-vehicle power supply 13 is applied to the window raising relay 2 via the window raising switch 1, the third backflow prevention diode 9, and the first backflow prevention diode 7. As in the case of operating the window raising switch 1 alone, the window raising relay 2 is driven, the window opening / closing motor 11 rotates in one direction, and the window opening / closing motor 11 rotates in one direction to raise the window. And close the window. At this time, since the movable contact of the automatic window raising switch 5 is closed, the voltage of the in-vehicle power source 13 is applied to the terminal (3) of the control IC 12, and the control IC 12 is connected to the terminal (6) of the in-vehicle power source 13 The voltage is output to the terminal (1) and supplied to the window raising relay 2. Here, when the operation of the automatic window raising switch 5 is stopped and the operation of the window raising switch 1 associated therewith is also stopped, the movable contact of the window raising switch 1 is switched from the normally open contact side to the normally closed contact side, and the window rises. Although the supply of the voltage of the in-vehicle power supply 13 to the window raising relay 2 through the switch 1 is stopped, the supply of the voltage of the in-vehicle power supply 13 output from the terminal (1) of the control IC 12 is latched, and the window raising relay 2 Since the supply of the voltage of the in-vehicle power supply 13 to the vehicle is continued, the window raising relay 2 is continuously driven. For this reason, the window opening / closing motor 11 continues to rotate in one direction and continues to raise the window. The rising of the window continues until the window reaches the top of the movement range and becomes fully closed. In this case, the third backflow prevention diode 9 is connected to apply all the voltage of the in-vehicle power supply 13 output from the terminal (1) of the control IC 12 to the window raising relay 2.
[0050]
Similarly, when a driver or the like operates the automatic window lowering switch 6, the window lowering switch 3 is simultaneously operated in conjunction with the operation, the movable contact of the automatic window lowering switch 6 is closed, and the movable contact of the window lowering switch 3 is changed. It switches from the normally closed contact side shown to the normally open contact side. When the movable contact of the window lowering switch 3 is switched to the normally open contact side, the voltage of the in-vehicle power supply 13 is applied to the window lowering relay 4 via the window lowering switch 3, the fourth backflow prevention diode 10, and the second backflow prevention diode 8. In the same way as when the window lowering switch 3 is operated alone, the window lowering relay 4 is driven, the window opening / closing motor 11 rotates in the other direction, and the window opening / closing motor 11 rotates in the other direction to lower the window. And open the window. At this time, the movable contact of the automatic window lowering switch 6 is closed, the voltage of the in-vehicle power supply 13 is applied to the terminal (3) of the control IC 12, and the control IC 12 applies the voltage of the in-vehicle power supply 13 supplied to the terminal (6). Output to terminal {circle around (2)} and supply to window lowering relay 4. Here, when the operation of the automatic window lowering switch 6 is stopped and the operation of the window lowering switch 3 associated therewith is also stopped, the movable contact of the window lowering switch 3 is switched from the normally open contact side to the normally closed contact side, and the window lowering is performed. Although the supply of the voltage of the in-vehicle power supply 13 to the window lowering relay 4 via the switch 3 is stopped, the supply of the voltage of the in-vehicle power supply 13 output from the terminal (2) of the control IC 12 is latched and supplied to the window lowering relay 4 The on-vehicle power supply 13 is continuously supplied with the voltage, and the window lowering relay 4 is continuously driven. For this reason, the window opening / closing motor 11 continues to rotate in the other direction and continues to descend the window. The lowering of the window continues until the window reaches the bottom of the range of movement and is fully open. In this case, the fourth backflow prevention diode 10 is connected to apply all the voltage of the in-vehicle power supply 13 output from the terminal (2) of the control IC 12 to the window lowering relay 4.
[0051]
Next, the operation when the vehicle is flooded (emergency) will be described.
[0052]
If the automobile falls into the water for some reason and is submerged in the vehicle, the water-resistant power window device of the first embodiment attached to the inside of the door is sequentially in the submerged state. In this case, immediately after the inundation starts in the vehicle, when the water slightly infiltrated into the bottom of the water-resistant power window device is added first between the exposed pair of parallel submergence detecting conductive pins 15, The resistance between the parallel submergence detection conductive pins 15 of the transistor 14 is reduced, the base circuit of the transistor 14 is closed by the series resistor 20 and the pair of parallel submergence detection conductive pins 15, and a detection current flows through the base circuit so that the transistor 14 is turned on. Become. Then, when the transistor 14 is turned on, the power supply voltage of the in-vehicle power supply 13 is applied to the detection terminal {circle around (8)} of the control IC 12 through the transistor 14, whereby the first terminal {circle around (4)} and the second terminal {circle around (5)} of the control IC 12. The power supply voltage is output and supplied to the window raising relay 2 and the window lowering relay 4. At this time, the window raising relay 2 and the window lowering relay 4 are both driven, and their contact points 2C and 4C are switched to a connection state opposite to the connection state shown in the figure, but the voltage of the in-vehicle power supply 13 is applied to the window opening / closing motor 11. Therefore, the window opening / closing motor 11 does not rotate and the window does not open / close.
[0053]
At this time, when the driver or the like operates the window lowering switch 3, the contact of the window lowering switch 3 is switched from the normally closed contact side to the normally open contact side, and the voltage of the in-vehicle power supply 13 is also applied to the other end of the window raising relay 2. Since it is applied, the drive of the window raising relay 2 is stopped, so that the contact 2C is switched to the illustrated connection state. At this time, the window lowering relay 4 is still in the driving state, and the contact 4C is switched to the connection state opposite to the connection state shown in the figure, so that the voltage of the in-vehicle power supply 13 is applied to the window opening / closing motor 11, and the window The opening / closing motor 11 is rotationally driven in the other direction. By the rotational drive of the window opening / closing motor 11 in the other direction, the window is lowered and the window is opened, so that the driver and the like can escape from the open window of the submerged automobile.
[0054]
On the other hand, if the driver or the like operates the window raising switch 1 instead of operating the window lowering switch 3, the window can be closed by the same function as described above.
[0055]
In this case, in the water-resistant power window device of the first embodiment, the detection current flowing in the base circuit of the transistor 14 at the time of submergence detection of the pair of parallel submergence detection conductive pins 15 is shown by the characteristic curve i shown in FIG. Thus, since the current at the time of detection does not become extremely large by connecting the series resistor 19, the pair of parallel submergence detection conductive pins 15 immersed in water has an extremely large detection current flowing in water. As a result, rapid electric corrosion (corrosion) does not occur, and a stable detection current is maintained for a relatively long time.
[0056]
Incidentally, when the series resistor 19 is not connected, the detection current flowing in the base circuit of the transistor 14 flows as a considerably large detection current immediately after detection, as shown by the characteristic curve b shown in FIG. The pair of parallel submergence detection conductive pins 15 immersed in the plate cause electrolytic corrosion (corrosion) due to a considerably large detection current flowing in water, and as a result, the detection current decreases in a relatively short time.
[0057]
The resistance value of the series resistor 19 is appropriately selected so that the detection current can be appropriately reduced depending on the characteristics of the transistor 14 and the characteristics of the pair of parallel submersion detection conductive pins 15.
[0058]
In addition, after a pair of parallel submergence detection conductive pins 15 detect inundation and drive the window raising relay 2 and the window lowering relay 4, the inundation proceeds and water enters the window raising switch 1 and the window lowering switch 3, respectively. When it enters, it becomes equivalent to the case where a leakage resistance due to water having a relatively small resistance value is connected between the movable contact and the normally open contact, as described above, but the window raising switch 1 and the window lowering switch 3 Since the normally closed contact is grounded in all cases, the voltage of the in-vehicle power supply 13 applied to the window raising switch 1 and the window lowering switch 3 is not limited to the leakage resistance between the movable contact and the normally open contact. It flows to the ground point through the movable contact that is switched to the closed contact side, and is hardly applied to the window raising relay 2 and the window lowering relay 4. For this reason, there is no change in the connection state of the contact 2C of the window raising relay 2 and the contact 4C of the window lowering relay 4, and the window opening / closing motor 11 is not rotationally driven. When a driver or the like operates the window lowering switch 3 from this state, the same operation as described above is executed.
[0059]
If the window raising switch 1 or the window lowering switch 3 is submerged before the pair of parallel submergence detecting conductive pins 15 are submerged in water, it is shown in FIG. Measures against flooding are carried out by the same process as the technique previously proposed by the present applicant.
[0060]
As described above, according to the water-resistant power window device of the first embodiment, immediately after the automobile falls into water and the water-resistant power window device is immersed in water, that is, water enters the window lowering switch 3. Previously, water that has entered slightly into the bottom of the water-resistant power window device is added to the pair of parallel submergence detection conductive pins 15, and the water is detected immediately by the parallel submergence detection conductive pins 15. Immediately after or after that, if you operate the window lowering switch 3, the window can be opened automatically. In addition to the functions of the conventional water-resistant power window device, the safety at the time of flooding is further improved. Can be made.
[0061]
In addition, since countermeasures against flooding are performed only by flooding detection by the parallel flooding detection conductive pin 15, instability is eliminated.
[0062]
In addition, the water-resistant power window device of the first embodiment includes two sets of parallel submergence detection conductive pins 15 erected at positions distant from the wiring board 19 and these are arranged in parallel in a circuit. Therefore, when any of the pairs of parallel submergence detection conductive pins 15 detects the inundation, the inundation countermeasure is advanced, and an early inundation countermeasure that is not affected by the inundation direction is possible. In this case, the number of parallel submergence detection conductive pins 15 used is preferably as large as possible, and it is better if the direction of standing is selected to be in all directions.
[0063]
Further, according to the water-resistant power window device of the first embodiment, when the pair of parallel submergence detection conductive pins 15 are submerged, the detection current peaks flowing through the pair of parallel submergence detection conductive pins 15 due to the connection of the series resistor 19. Since the value can be suppressed, there is no sudden electric corrosion (corrosion) due to a considerably large detection current flowing in the pair of submerged parallel submergence detection conductive pins 15, and the inundation detection function of the parallel submergence detection conductive pin 15 is long. Can be maintained over time.
[0064]
Next, FIG. 4 is a circuit diagram showing a main configuration of a second embodiment of the water-resistant power window device according to the present invention.
[0065]
4, the same components as those illustrated in FIG. 1 are denoted by the same reference numerals.
[0066]
The configuration of the second embodiment is different from the configuration of the first embodiment in that the automatic window raising switch 5 and the automatic window lowering switch 6 used in the configuration of the first embodiment are omitted (first difference) ), And the pair of parallel submergence detection conductive pins 15, the first embodiment uses a pair of straight parallel submergence detection conductive pins, whereas the tip is parallel to the surface of the wiring board 19, and The second embodiment is the same as the first embodiment except that a pair of parallel submersion detection conductive pins bent so as to face each other are used (second difference). For this reason, further description of the configuration of the second embodiment is omitted.
[0067]
In the normal operation (non-water-immersion) operation of the second embodiment, the automatic window raising switch 5 and the automatic window lowering switch 6 are omitted when raising and lowering the window. Except that the automatic operation using the window raising switch 5 and the automatic window lowering switch 6 cannot be performed, it is almost the same as the normal operation of the first embodiment. For this reason, further description of the normal operation of the second embodiment is omitted.
[0068]
Furthermore, since the operation when the vehicle is submerged (emergency) in the second embodiment is exactly the same as that in the first embodiment, the description of this operation is also omitted.
[0069]
Moreover, about the effect which 2nd Example show | plays, since the front-end | tip shape of a pair of parallel submergence detection conductive pin 15 is the shape opened to the outer side, a pair of parallel submergence detection used in 1st Example Compared with the conductive pin 15, the contact between the pair of parallel submergence detection conductive pins 15 is drastically reduced because the contact is made in a wider area at the moment of contact with the invading water, that is, detection Sensitivity is more sensitive.
[0070]
In each of the above embodiments, the semiconductor detection element 14 in the submergence detection element is a transistor, and the submergence detection element is a pair of parallel submergence detection conductive pins. However, the present invention is not limited to these configurations. In addition to the transistor, the semiconductor detecting element 14 may be replaced with an element that performs a similar operation to the transistor. As the submerged detecting element, a pair of parallel submerged detecting conductive plates other than the pair of parallel submerged detecting conductive pins is provided. You may make it use.
[0071]
In each of the above embodiments, the pair of parallel submergence detection conductive pins straight to the submergence detection element of the first example, and the pair of parallel submergence whose tip shape opens outward from the submergence detection element of the second example. Although an example using each detection conductive pin has been described, a pair of parallel submergence detection conductive pins whose tip shapes are open outwardly is used for the submergence detection element of the first embodiment, and a straight pair is used for the second embodiment. The parallel submergence detection conductive pins may be used, and a pair of straight submergence detection conductive pins may be used in both the first and second embodiments. Both the first and second embodiments may be used. Alternatively, a pair of parallel submergence detection conductive pins whose tip shapes are open in the outward direction may be used.
[0072]
【The invention's effect】
  As described above, according to the present invention, when an automobile falls into the water and the water-resistant power window device is submerged, the submergence detection by the parallel submergence detection conductor is performed soon after the water-resistant power window device begins to be submerged. The semiconductor detecting element is immediately turned on, the power supply voltage is output from the first terminal and the second terminal of the control integrated circuit, the first relay that raises (closes) the window and the second that lowers (opens) the window Since the power supply voltage was supplied to each relayImmerseFrom an early point after water, the first switch that raises the window or the second switch that lowers the window can be operated to raise or lower the window. In particular, the window can be lowered by operating the second switch. It is possible to quickly escape from an open window.
[0073]
  Further, according to the present invention, the submergence detection element is directly connected.LineBy connecting the resistance, when the submergence detection element detects submersion, the peak value of the current flowing through the submergence detection element is suppressed by this series resistance. In addition, there is an effect that the inundation detection function of the submergence detection element is not rapidly weakened.
[Brief description of the drawings]
FIG. 1 is a circuit diagram showing the main configuration of a first embodiment of a water-resistant power window device according to the present invention.
FIG. 2 is a configuration diagram showing an example of a configuration when the water-resistant power window device of the first embodiment is mounted on a wiring board.
FIG. 3 is a characteristic diagram showing a change state of a detected current in the water-resistant power window device according to the first embodiment.
FIG. 4 is a circuit diagram showing a main configuration of a second embodiment of the water-resistant power window device according to the present invention.
FIG. 5 is a circuit diagram showing an example of a circuit configuration of a main part of a known power window device.
FIG. 6 is a circuit diagram showing the configuration of a water-resistant power window device that has already been proposed.
[Explanation of symbols]
1 Window lift switch (1st switch)
2 Wind rising relay
Contact point of 2C window raising relay
3 Window lowering switch (second switch)
4 Wind lowering relay
4C Wind lowering relay contact
5 Automatic window lift switch
6 Automatic window lowering switch
7 First backflow prevention diode
8 Second backflow prevention diode
9 Third backflow prevention diode
10 4th backflow prevention diode
11 Wind open / close motor
12 Control IC (Control Integrated Circuit)
13 On-vehicle power supply (battery)
14 Transistor (Semiconductor sensing element)
15 Parallel submergence detection conductive pin (submergence detection element)
16, 17 resistance
18 Diode
19 Series resistance
20 Wiring board

Claims (2)

A first series circuit composed of a first switch and a first relay, one end of which is switched and connected to the on-vehicle power source or the ground point, and a second series consisting of a second switch and a second relay, one end of which is switched and connected to the on-vehicle power source or the ground point A circuit board including a series circuit, a control integrated circuit, and the first switch, the first relay, the second switch, the second relay, and the control integrated circuit , wherein the first switch of the first relay includes: The other end that is not connected is connected to the connection point of the second switch and the second relay, and the one end that is connected to the first switch of the first relay is connected to the first terminal of the control integrated circuit. The other end of the second relay that is not connected to the second switch is connected to a connection point between the first switch and the first relay, and the second switch of the second relay is connected. One end is connected to the second terminal of the control integrated circuit, and when the contact of the first switch is switched, the motor is rotated in one direction by the energization of the first relay to raise the window, and the second switch A water-resistant power window device that lowers the window by rotating the motor in the other direction by energizing the second relay when switching the contact between the on-vehicle power source and the detection terminal of the control integrated circuit A semiconductor detection element connected thereto, and a submergence detection element connected via a series resistor between a control terminal of the semiconductor detection element and the ground, and the semiconductor detection element is turned on when the submergence detection element detects the submersion. A water-resistant power window device for outputting a power supply voltage from the first terminal and the second terminal of the control integrated circuit.   The water-resistant power window device according to claim 1, wherein two or more submergence detection elements are arranged and connected in parallel.

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